Sweetwater Regional Park Weather Forecast

    • 63
    • 78

    Patchy Fog

    • 68
    • 81

    Patchy Fog

    • 70
    • 86

    Patchy Fog

    • 70
    • 85

    Patchy Fog

    • 69
    • 84

    Mostly Sunny

Today 14 Sep San Diego County Coastal Areas

Mostly cloudy this morning. Becoming mostly sunny. Patchy fog this morning. Highs 71 to 75 near the coast to 80 inland. Light Winds becoming west 10 Mph this afternoon.

Tonight 14 Sep San Diego County Coastal Areas

Partly cloudy this evening. Becoming cloudy. Patchy fog overnight. Lows 60 to 64. Light Winds.

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Sweetwater Regional Park Temperature Statistics

September Temperature

San Diego, Brown Field Municipal Airport (6.8 miles)

  • Lowest 12 September, 2025

    57 °F

  • Average September

    71.3 °F

  • Highest 7 September, 2025

    88 °F

Climate (2020–Present)

San Diego, Brown Field Municipal Airport (6.8 miles)

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  • Average Low 2020–2025

    54 °F

  • Average 2020–2025

    63.4 °F

  • Average High 2020–2025

    73.9 °F
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